CPT Code 90853: Group Psychotherapy

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• 90853

CPT Code 90853: Group Psychotherapy

CPT code 90853 for group psychotherapy billing. Per-patient reimbursement rates, documentation requirements, and compliance for behavioral health.

Quick Reference

Code

90853

Code System

CPT

Category

CPT Codes

Published

Mar 4, 2026

Reading Time

9 min

CPT® is a registered trademark of the American Medical Association. All CPT code descriptions on this page are paraphrased in original wording; consult the current CPT® codebook published by the AMA for authoritative descriptors.

Overview of CPT Code 90853

CPT code 90853 describes group psychotherapy, a therapeutic modality in which a qualified mental health professional leads a structured therapy session with multiple patients simultaneously. Group therapy is one of the most commonly delivered services in behavioral health treatment, particularly in residential treatment centers, intensive outpatient programs, and partial hospitalization programs where patients may attend multiple groups per day.

For behavioral health organizations, 90853 represents a cost-effective treatment modality that delivers evidence-based therapeutic benefit while generating revenue across multiple patients in a single session. Most addiction treatment centers and behavioral health facilities run several group therapy sessions daily, making 90853 a high-volume billing code in these settings.

Definition and Purpose

CPT code 90853 is defined as “Group psychotherapy (other than of a multiple-family group).” The code is billed once per patient per group session. It covers the therapeutic service delivered to each individual within the group context and is reported separately for each participating patient.

The purpose of group psychotherapy is to leverage the therapeutic dynamics that emerge when patients interact in a structured, clinician-facilitated setting. Group therapy provides benefits that individual therapy cannot replicate, including peer support, social learning, interpersonal feedback, universality (the realization that others share similar struggles), and the opportunity to practice social and communication skills in a safe environment.

90853 is distinct from multi-family group therapy (90849), which involves multiple families in a single session. It is also distinct from family therapy codes (90846, 90847), which involve a single patient’s family members. Group psychotherapy under 90853 involves unrelated patients participating together in a therapeutic group.

When to Use in Behavioral Health

Group psychotherapy is a foundational treatment modality in behavioral health. The following types of groups are commonly billed under 90853.

Process groups. Open-ended therapeutic groups where patients explore emotions, interpersonal patterns, and personal issues in a supportive setting. Process groups are a staple of residential and intensive outpatient treatment for substance use disorders and mental health conditions.

Psychoeducation groups. Structured groups focused on teaching patients about their conditions, treatment approaches, coping skills, and recovery principles. Common topics include understanding addiction, managing cravings, recognizing triggers, and understanding the neuroscience of mental health conditions.

Skills-based groups. Groups focused on teaching and practicing specific therapeutic skills. Examples include dialectical behavior therapy (DBT) skills groups covering mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness. Cognitive behavioral therapy (CBT) groups that teach cognitive restructuring and behavioral activation also fall into this category.

Relapse prevention groups. Groups specifically focused on identifying personal relapse triggers, developing coping strategies, creating relapse prevention plans, and building recovery support networks. These are particularly common in substance use disorder treatment programs.

Trauma-focused groups. Groups designed for patients with trauma histories, focusing on psychoeducation about trauma responses, grounding skills, emotional regulation, and building safety within a group context. Note that detailed individual trauma processing is typically done in individual therapy rather than group settings.

Specialized population groups. Groups designed for specific populations, such as women’s groups, veterans’ groups, young adult groups, or groups for patients with co-occurring disorders. The group content is tailored to the unique needs and experiences of the specific population.

Group Size Considerations

While CPT code 90853 does not specify a required group size, practical and clinical guidelines generally recommend groups of 6 to 12 patients. Some important considerations around group size include:

• Most payers require a minimum of two patients for a session to qualify as group therapy
• Some payers set maximum group size limits, beyond which reimbursement may be reduced or denied
• Clinically, groups that are too small may not generate sufficient group dynamics, while groups that are too large may limit individual participation
• Documentation should reflect the actual number of participants in each session

Documentation Requirements

Documentation for group therapy requires both a group-level note and individual patient-level documentation. Each element serves a different purpose.

Group session note. Document the overall group session, including the group topic or focus, the therapeutic modality used, the structure of the session, the duration of the session with start and stop times, and the names of all participants. This note establishes that a group therapy session occurred and provides context for the individual patient notes.

Individual patient notes. For each patient billed under 90853, document the following in the individual medical record:

Treatment plan connection. Each patient’s treatment plan should include group therapy as a prescribed service with specific goals that group participation is intended to address. Payers may deny 90853 claims if the patient’s treatment plan does not support group therapy as a medically necessary service.

Facilitator credentials. Document the name and credentials of the group facilitator. The facilitator must be a qualified mental health professional licensed to provide psychotherapy in the state where services are delivered.

Attendance tracking. Maintain accurate records of which patients attended each group session. This is important for billing accuracy, clinical continuity, and audit readiness.

• The patient’s attendance and participation level in the group
• The patient’s specific responses, contributions, or behaviors during the session
• How the group content relates to the patient’s individual treatment plan goals
• Any clinical observations specific to that patient, such as mood, affect, engagement level, or interpersonal interactions
• Progress or barriers related to the patient’s treatment objectives

Billing and Reimbursement

As of March 2026, approximate reimbursement rates for CPT code 90853 are as follows.

• Medicare national average: approximately $33 per patient per session
• Medicaid: varies by state, typically ranging from $18 to $40 per patient per session
• Commercial insurance: varies by contract, often ranging from $25 to $60 per patient per session

Revenue Per Group Session

Because 90853 is billed per patient, the total revenue from a single group session depends on group size. For example:

This per-patient billing structure makes group therapy one of the most cost-effective treatment modalities from a revenue perspective, particularly for programs that run multiple groups per day.

• A group of 8 patients at $33 per patient generates approximately $264 per session
• A group of 10 patients at $33 per patient generates approximately $330 per session
• A group of 12 patients at $33 per patient generates approximately $396 per session

Multiple Groups Per Day

Patients in intensive outpatient programs and residential treatment often attend multiple group therapy sessions per day. Each session can be billed separately under 90853 as long as each group is a distinct therapeutic session with different content, a separate start and stop time, and independent documentation. Payers may impose daily or weekly limits on the number of group sessions that can be billed per patient, so verify payer-specific policies.

Common Modifiers

Several modifiers may apply when billing CPT code 90853.

Modifier 95 — Synchronous telemedicine. Used when the group therapy session is conducted via real-time audio and video telehealth. Telehealth group therapy has expanded significantly, particularly for outpatient and aftercare programs.

Modifier GT — Via interactive audio and video. Some payers require modifier GT for telehealth claims. Check payer-specific telehealth billing requirements.

Modifier HQ — Group setting. Some Medicaid programs and payers require modifier HQ to indicate a service was delivered in a group setting. This modifier is more commonly required for HCPCS codes but may apply to 90853 depending on the payer.

Modifier 59 — Distinct procedural service. Used when 90853 is billed on the same day as individual therapy or another group session to indicate the services were separate and distinct encounters.

Modifier XE — Separate encounter. A more specific alternative to modifier 59, indicating the group session occurred during a separate encounter from other services billed on the same day.

Compliance Considerations

Group therapy billing requires careful attention to compliance due to the multi-patient nature of the service and the volume of claims it generates.

Individual documentation for each patient. The most common compliance failure with 90853 is copying identical notes for every patient in the group. Each patient’s documentation must be individualized, reflecting that patient’s specific participation, responses, and progress. Identical or templated notes across all group members are a red flag for auditors and can result in recoupment of payments.

Attendance verification. Only bill 90853 for patients who actually attended and participated in the group session. Billing for patients who were absent, arrived late and missed a substantial portion of the session, or left early is a compliance violation. Establish clear policies for how much of a group session a patient must attend to qualify for billing.

Therapeutic versus educational or recreational activities. Not all group activities qualify as group psychotherapy under 90853. Activities that are primarily recreational, social, or educational without a psychotherapeutic component should not be billed under this code. The group must involve structured therapeutic interventions delivered by a qualified mental health professional.

Facilitator qualifications. The group must be led by a provider who is licensed and credentialed to deliver psychotherapy. Some programs use peer support specialists, behavioral health technicians, or other non-licensed staff to lead groups. These groups generally cannot be billed under 90853 unless the non-licensed staff member is operating under direct supervision of a licensed clinician and the payer permits such arrangements.

Group size limits. Monitor payer-specific group size requirements. If a payer limits group size to 12 patients and your group has 15 participants, claims may be denied. Some payers audit group size by cross-referencing claims across patients to identify groups that exceed their limits.

Concurrent service restrictions. A patient cannot receive individual therapy and group therapy at the same time. Each service must occur during a separate time block with no overlap. Additionally, a single clinician generally cannot bill for providing individual therapy to one patient while simultaneously leading a group session.

Medical necessity for group participation. Each patient’s treatment plan should document the medical necessity of group therapy for that individual. Blanket inclusion of group therapy for all patients without individualized clinical justification can draw audit scrutiny.

Related Billing Codes

• 90846
• 90847
• 90849
• 90863
• 90869
• 90870

Common questions

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